JPS6148617A - Annulus plate member fixed on fixed member or rotary member in automatic transmission - Google Patents

Abstract

PURPOSE:To prevent an annulus plate member from rattling by making spline- fitting of an annulus plate member in inner splines formed on a fixed or rotary member in an automatic transmission case between a tapered ring and a locking means. CONSTITUTION:An annulus plate member 1A fixed on a fixed or rotary member in an automatic transmission case comprises inner splines 2a formed on the fixed or rotary member in the automatic transmission case 110, ring grooves 2b formed on inner splines 2a and a locking means 6, a tapered ring 3 set inside of the ring grooves 2b, an outer shell 1b having outer splines 1a to spline-fit in the inner splines 2a mounted between the tapered ring 3 and the locking means 6. The tapered ring 3 is arranged so that the curved portion 3n of its one end plane 3n may abut on the inclined portion 2d of the ring groove 2b, and the other end plane may come into contact with the tip plane of the annulus plate member.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an annular plate-shaped member fixed to a fixed member or a rotating member within a vehicle automatic transmission case.

[Prior Art] Conventionally, an annular plate-shaped member fixed to a fixed member or a rotating member in a vehicle automatic transmission case is fixed by a snap ring or the like. For example, a hydraulic servo for a friction engagement brake consists of an outer cylinder, an inner cylinder, and a side wall connecting the two, and includes an annular hydraulic drum, which is an annular plate-shaped member fixed within the automatic transmission case with a snap ring or the like. a piston provided between an outer cylinder and an inner cylinder of the hydraulic drum;
It consists of a return spring installed on the outer crown or wall of the outer cylinder, and supplies line pressure oil between the hydraulic servo drum and the piston to engage the friction engagement brake or discharge the line pressure oil. By doing so, the friction engagement brake was released.

[Problems to be Solved by the Invention] However, a snap ring or the like has conventionally been used as a method for fixing an annular plate-shaped member fixed to a fixed member or rotating member within an automatic transmission case. This type of ring plate-like member tends to rattle. Furthermore, the automatic transmission for a vehicle has a friction engagement brake B2 fixed to the automatic transmission case, which fixes the outer race of the one-way clutch F2 when engaged, for example, when shifting up from first gear to second gear. There is something. This friction engagement brake B2
When the hydraulic drum is in reverse (R), it is pushed in the input direction, and in 2nd, 3rd, and 4th gears, the output is pushed back in the direction by its own hydraulic load, so with the snap ring, Hydraulic drum rattles.

The present invention prevents rattling because the annular plate member is spline-fitted with an inner spline formed on a fixed member or a rotating member in the automatic transmission case between the tapered ring and the locking means. An object of the present invention is to provide an annular plate-like member fixed to a fixed member or a rotating member in an automatic transmission case, in which a tapered ring is reliably assembled into a ring groove.

[Means for Solving the Problems] The annular plate member 1A fixed to the fixed member or rotating member in the automatic transmission case of the present invention is attached to the case 110 in the automatic transmission as shown in FIG. an inner spline 2a formed on the fixed member or rotating member within, a ring groove 2b formed on the inner spline 2a and a locking means 6, a tapered ring 3 attached to the ring groove 2b,
An outer cylinder 1b is installed between the tapered ring 3 and the locking means 6, and has an outer spline 1a that is spline-fitted with the inner spline 2a between the locking means 6 and the tapered ring 3. An annular plate-shaped member 1 fixed to a fixed member or rotating member in the automatic transmission case
In A, the tapered ring 3 has a curved portion 3n of one end surface 3a in contact with the inclined portion 2d of the ring groove 2b, and the other end surface 3b is urged against the tip surface 1C of the annular plate-shaped member. That is the composition.

[Operations and Effects of the Invention] With the above configuration, the annular plate member fixed to the fixed member or rotating member in the automatic transmission case of the present invention has the following functions and effects.

b) Since the tapered ring has a curved portion on one end surface in contact with the inclined portion of the ring groove, the tapered ring can be easily fitted into the ring groove.

Since the other end surface is biased against the tip surface of the annular plate-shaped member, it can be prevented from being handled by axial force.

[Example] The present invention will be explained based on an example shown in the drawings. 1. FIG. 2 shows a cross section of an automatic transmission for a vehicle.

The automatic transmission 100 includes a fluid transmission device (torque converter in this embodiment) 200, a transmission 300, and a hydraulic control device 400. The 3° transmission 300 is operated by a first planetary gear set 20 and a hydraulic servo. One multi-disc clutch C011
One multi-disc brake BO1 and one one-way latch F
an overdrive planetary gear transmission 10 comprising O;
Second planetary gear set 50, third planetary gear set 80, two multi-disc clutches C1, C2 operated by hydraulic servo, one belt brake B1, two multi-disc brakes B2, B3, and two one-way brakes. It is comprised of an underdrive planetary gear width transmission 40 with three forward speeds and one reverse speed, which is equipped with latches F1 and F2.

Case 110 of automatic transmission 100 includes a torque converter housing 120 that accommodates torque converter 200;
It consists of a transmission case 130 that houses the overdrive planetary gear transmission 10 and the underdrive idle gear transmission 40 in series, and an extension housing 140 that covers the rear side of the automatic transmission 100. The transmission case 130 and the extension housing 140 are each fastened with a large number of bolts.

The torque converter 200 is housed in a torque converter chamber 121 that is open at the front (engine side) of the torque converter housing 120, and includes a front cover 111 connected to the output shaft of the engine, and a circular ring welded to the front cover 111 at the outer periphery. A plate-shaped rear cover 112, a pump impeller 205 disposed around the inner peripheral wall of the rear cover 112, a turbine runner 206 disposed opposite to the pump impeller 205, and a turbine shell holding the turbine runner 206. 207, one-way clutch 20
a stator 201 supported by a fixed shaft 203 via 2;
and the front cover 111 and the turbine shell 20
7 is provided with a direct coupling clutch (lock-on Y clutch) 113 that is directly coupled to the terminal 7. The torque converter chamber 12
1 and the cylindrical transmission chamber 132 of the transmission case 130, which is continuous to the rear thereof, is provided with a gear type oil pump 150 therein and an annular transmission chamber 150 having a cylindrical portion 152 protruding forward in the center thereof. The oil pump body 151 is fitted into the front end of the transmission case 130 with a spigot and is fastened, and the rear side of the oil pump body 151 has a coaxial center with the cylindrical part 152 and projects rearward. An oil pump cover 154 having a cylindrical front support 153 is fastened.

The front 2 oil pump body 151 and the oil pump cover 154 form an oil pump housing 155,
It serves as a partition wall between the torque converter chamber 121 and the transmission chamber 132, and also serves as a front supporting wall of the transmission 300. Further, in the middle of the transmission chamber 132 of the transmission case 130, a cylindrical center support 1 is provided which separates an overdrive mechanism chamber 133 and an underdrive mechanism chamber 134 and projects rearward.
An intermediate support wall 159 having a diameter of 58 is separately cast and provided.

At the rear of the transmission case 130, there is a rear support wall 1 having a cylindrical rear support 156 that projects forward.
57 is integrally cast with the transmission case 130. The space between the oil pump housing (front support wall or partition wall) 155 and the rear support wall 157 constitutes a transmission chamber 132 in which the transmission 300 is housed, and the rear support wall 157 and the extension housing 1
40 forms the output shaft v141 of the transmission,
The extension housing 140 includes an electronic h>a type sensor rotor 143 and a speedometer drive gear 144.
A sleeve yawter (not shown) is inserted into the rear end portion thereof, and is connected to a propeller shaft (not shown) coaxially with the front support 153.

The fixed shaft 20 is located inside the front support 153.
A transmission input shaft 11, which is the output shaft of the torque converter 200, is rotatably supported inside the shaft 3. The input shaft 11 has a large diameter rear end portion 12 having a flange portion 12a projecting rearward from the front port 153, and a rearward center hole 13 is formed in the axis of the rear end portion 12. An input shaft 1 is located behind the input shaft 11.
An intermediate transmission shaft 14 having a coaxial center at 1 and arranged in series is rotatably provided.

The intermediate transmission shaft 14 has its tip inserted into the center hole 13 and comes into rotatable sliding contact with the inner circumferential wall of the center hole 13 via a metal bearing, and its rear end 15 has a large diameter. A rearwardly facing central hole 16 is formed in the heart. An output shaft 36 is rotatably provided behind the intermediate transmission shaft 14 and is coaxial with the intermediate transmission shaft 14 and arranged in series. The tip of the output shaft 36 is inserted into the center hole 16 of the intermediate transmission shaft 14 and is in sliding contact with the inner wall of the center hole 16 via a metal bearing. The output shaft 36 is connected to the ring gear R2 of the third planetary gear set 80 at the intermediate portion 37.
It is spline-fitted to a seven-lunge plate 82 having a rearwardly protruding shaft support 81 that meshes with the sleeve yoke, and is spline-fitted to the sleeve yoke at the rear part 38. The drive gear 144 is fixed.

In the overdrive mechanism ¥133, the input shaft 1
A first planetary gear set 20 is provided on the rear side of the
The ring gear RO has a flange plate 22 on the intermediate transmission shaft 14.
Combined through, Burane Tariki 1? The rear PO is coupled to the seven flange portions 12a of the input shaft 11, and the sun gear SO is formed on the inner race shaft 23. On the front side of the first planetary gear set 20, a first hydraulic servo drum 24 that opens rearward is fixed to an inner race shaft 23, and an annular piston 25 is fitted between the outer circumferential wall and the inner race shaft 23, and a clutch CO A hydraulic servo C-0 is formed, and a return spring 2 is installed on the inner race shaft 23 side.
6. A clutch CO is installed inside the outer peripheral wall, and is connected to the planetary carrier PO via the clutch CO. A one-way latch FO with the inner race shaft 23 as an inner race is provided on the inner periphery of the first hydraulic servo drum 24, and a clutch CO and a brake BO are provided on the outer periphery between the outer race 27 and the transmission case 130.
A piston 29 is fitted into the front side of the intermediate support wall 159 on the rear side to form a hydraulic servo B-o of the brake BO, and a return spring 32 provided at the inner circumferential portion 31 of the tip of the intermediate support wall 159 is fitted. It is.

Inside the underdrive mechanism chamber 134, first, at the front, a second hydraulic servo drum 41 that opens rearward is rotatably fitted onto the center support 159, and an annular piston 42 is fitted between its inner and outer peripheral walls to control the hydraulic pressure of the clutch C2. In addition to forming a servo C-2, a return spring 44 is attached to the inner circumferential wall, and a clutch C2 is attached to the inner side of the outer circumferential wall. A ram 46 is attached to the rear end portion 15 of the intermediate transmission shaft 14, and An annular piston 47 is fitted between the rear end portion 15 and the outer circumferential wall to form a hydraulic lever C-1 of the clutch C1, and a return spring 49 and an annular protrusion 3 are provided on the inner circumferential side.
A clutch C2 is attached to the outer periphery of the hydraulic servo drum 5, and a second oil servo drum 41 and a third hydraulic servo drum 46 are connected via the clutch C2.

A second planetary gear set 50 is provided on the rear side of the third hydraulic servo drum 46, the ring gear R1 of which is connected to the third hydraulic servo drum 46 via an annular projection 48 and a clutch C1, and a planetary carrier P1. is spline-fitted to the tip of the output shaft 36, and the sun gear S1
is integrally formed with the sun gear shaft 45.

has been completed. In addition, the second hydraulic system is Bozeram and the third hydraulic system.
A connecting drum 60, which is molded to cover the hydraulic servo drums 41, 46 and the second planetary gear set 50 in a minimum space, is fixed at its tip to the outer periphery of the second hydraulic servo drum 41, and its rear end is connected to the second planetary gear set. Set 5
0 is connected to the sun gear shaft 45 on the rear side, and a belt brake IBL is provided on the outer circumferential side.

Transmission case 1 on the rear side of the brake B2
From the front, the inner spline 75- formed on the inside of the brake disc b2 of the brake B2, the outer spline 1a of the fourth hydraulic servo drum 1, and the brake B3
The brake disc b3 is spline-fitted, and the piston 7 is fitted in an annular hole between the outer peripheral side of the rear support 156 of the rear support wall 157 and the transmission case 130.
7 is fitted to form a hydraulic servo B-3 of the brake B3, and a return spring 7 of the hydraulic servo B-3 is fitted.
9 is supported by a retainer attached to the tips of rear sabots 1 to 156.

The third planetary gear set 80 includes a sun gear S2 integrally formed with the sun gear shaft 45, and a planetary carrier P2.
is connected to the outer race 86 of the front axial clutch F2 and to the brake B3, and a ring gear R2 having a parking gear 85 around its outer periphery is connected to the intermediate portion 37 of the output shaft 36.

The parking gear 85 engages the parking pawl 8 when the shift lever of the automatic transmission is selected to the parking (P) position.
4 meshes with the parking gear 85 to fix the output shaft 36.

In the surplus space 61 on the rear side of the connecting drum 60 on the outside of the second planetary gear set 50, a fourth ring plate member 1A, which is an annular plate-shaped member fixed to a fixed member or a rotating member in the automatic transmission case according to the present invention, is provided. A hydraulic servo drum 1 is provided,
The fourth hydraulic servo drum 1 opens forward as shown in FIG. 3, and also serves as a reaction plate for a return spring to be described later, and has an outer cylinder 1b1 and an inner cylinder 1 as shown in FIG.
d and a side wall 11 that connects the two, the cross section is formed into a U-shape by pressing, and processed to form an inner spline on the inner periphery and an outer spline 1a for spline fitting with the transmission case 130 on the outer periphery. Transmission case 1 by spline 1a
30 in the rotational direction and the tapered ring 3
It is fixed in the axial direction from the step part 2C which is the locking means 6 formed on the transmission case 130, receives the pressing force when the brake B3 is engaged on the rear side of the hydraulic servo, and is supported by the tapered ring 3. . An intermediate cylinder 1h that is connected to the fourth hydraulic servo drum 1 by a welded portion 1g and that prevents hydraulic pressure leakage from the hydraulic servo B-2 is press-molded.

- One end surface 4f of the inner peripheral side 4e as shown in Figure 6.7.8.9
Attach the connecting tool to be described later, and connect the piston body 4a consisting of one end surface 4b to the right of the hole 4g opened on the front side of the outer peripheral side 4) and the one end surface 4b of the piston body 4a at the 10th and 11th angles.
．． As shown in FIG. 12, the piston 4 has an adapter sleeve 4d covered by a single-shaped wall rear side surface 4c, which improves ease of assembly of the tapered ring 3 that fixes the fourth hydraulic servo drum 1 to the transmission case 130. is fitted between the fourth hydraulic servo drum 1 and an intermediate cylinder 1h protruding from a predetermined position within the drum 1 to form a hydraulic servo B-2 of the brake B2, and the intermediate cylinder 1
h is the optimum diameter for the area of the piston 4.

As shown in FIG. 1, the tapered ring 3 has one end surface 3a.
is in contact with the ring groove 2b, and the other end surface 3b is in contact with the outer cylinder tip surface 1.
This is the load point A between the other end surface 3b and the outer cylinder tip surface 1c of the outer cylinder 1a of the fourth hydraulic pump body drum 1, and the contact point between the one end surface 3a and the slope portion 2d of the ring groove 2b. By setting the radial direction from the fulcrum B to 0.5 mm (conventionally 2.On+m) and reducing the moment, the outer peripheral end 3C of one end surface 3a and both ends 3d of the other end surface 3b,
3e is the curved part 3f, 3(], 3h, r(r knee 〇2~0.9+nm), which prevents the concentration of response and has a radius (r) larger than the curved part 3[, 3g, 3+1.
:30mm) One end surface 3 having a curved surface portion 31
It has an inner peripheral end 3J of a. Further, the one end surface 3a and the ring groove 2b are brought into contact with each other by a slope (notch) surface 31 formed in a part 3k of the one end surface 3a, and between the slope 31 and the other part 3 of the one end surface 3a.
The pin angle with m is made by the curved portion 3n of radius (r) = 3 mm and the inclined portion 2d, and it is possible to prevent the tapered ring 3 from being caught due to the pin angle. Further, by making the distance C between the other end surface 3b and the inner sprue-in 2a close to On+m, the inclination angle of the tapered ring 3 is reduced. 3p
, 3q are holes formed at both ends r and s, and when the tapered ring 3 is not removed, a wedge-shaped removal fitting such as a screwdriver is inserted into the holes 3p and 3q.

The above-mentioned sizing means may be a tapered ring other than a stepped portion provided on the transmission case, or may be other means.

\, The return biasing means 90 has one end 91a fixed to one end surface 4f of the inner circumferential side 4e of the piston 4, and the other end 91b fixed to the inner circumferential side 1, i of the intermediate cylinder 1h to the other side of the intermediate cylinder 1h. Edge 1
The connecting tool 91 that is passed around the inner cylinder 1d and the one end 1 of the inner cylinder 1d
The retainer 92 has the other end 921 fixed to k, and has one end 922 wrapped around so as to engage the outer periphery 941 of a ring 94 fixed to a snap ring 95 fixed to -@lk of the inner cylinder 1d. , and a return spring 93 disposed between the connector 91 and the retainer 92.

! transmission 300
A bolt 402 is attached to the lower part of the transmission case 130 depending on vehicle running conditions such as vehicle speed and throttle opening.
The engagement or release of each clutch and brake is controlled by the hydraulic pressure selectively output from the blood pressure control device 400 in the valve body 403 to the hydraulic servo of each friction device. 4 forward gears are changed to 1 reverse gear. Examples of the operation of each clutch, brake, and one-way clutch and the achieved gear ranges are shown below. Shown in 1.

Table 1 In Table 1, E indicates that the corresponding clutch, brake, or one-way clutch is engaged.

('L') indicates that the corresponding one-way latch engages only in the engine drive state and does not engage in the engine brake state. Furthermore, the corresponding one-sided clutch is engaged in the engine drive state, but this engagement is not necessarily necessary because power transmission is guaranteed by a clutch or brake built in parallel. (locked).

Furthermore, [X%I indicates that the corresponding one-sided clutch is free. A rough cross indicates that the corresponding clutch and brake are released.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an annular plate-like member fixed to a fixed member or rotating member in an automatic transmission case of the present invention, and FIG. 2 is a sectional view of a fixed member or rotating member in an automatic transmission case of the present invention. A cross-sectional view of a vehicle automatic transmission to which a fixed annular plate member is applied, FIG. 3 is a cross-sectional view of the main part of FIG. 2, and FIG. A front view of the hydraulic servo drum attached to the annular plate-shaped member fixed to the member, FIG. 5 is a sectional view taken along the line A-A in FIG. 4, and FIG. A front view of one side of the piston that is attached to the annular plate-shaped member fixed to the member,
FIG. 7 is a sectional view taken along line BB in FIG. 6, and FIG. 8 is a sectional view of the other piston connected to the annular plate member fixed to the fixed member or rotating member in the automatic transmission case of the present invention. FIG. 9 is a cross-sectional view of a piston attached to an annular plate member fixed to a fixed member or a rotating member in an automatic transmission case of the present invention, FIG. 10 is a cross-sectional view of an adapter sleeve, and FIG. 12 is a sectional view of the adapter sleeve, FIG. 13 is a front view of the tapered ring, FIG. 14 is a side view of FIG. 13, and FIG. 15 is a sectional view of FIG. 14. In the figure: 1... Annular plate-shaped member fixed to a fixed member or rotating member in the automatic transmission case 2b... Ring groove 2d... Inclined part 3... Taper link 3a
...One end surface 3n...Curved surface portion 100...Automatic transmission 200...Torque converter 300...
Transmission 400...hydraulic control device

Claims (1)

[Scope of Claims] 1) An inner spline formed on a fixed member or rotating member in an automatic transmission case, a ring groove and a locking means formed on the inner spline, a tapered ring attached to the ring groove, A fixed member or a rotating member in an automatic transmission case that is installed between the tapered ring and the locking means and has an outer spline that is spline-fitted with an inner spline between the locking means and the tapered ring. In the fixed annular plate-shaped member, the tapered ring has a curved part of one end surface abutted against the inclined part of the ring groove, and the other end surface is urged against the tip of the annular plate-shaped member. An annular plate-shaped member fixed to a fixed member or a rotating member in an automatic transmission case, characterized by: 2) The locking means is a stepped portion, the annular plate member is a hydraulic servo drum of a friction engagement brake, and the load point between the tapered ring and the tip surface of the annular plate member is Fixed to a fixed member or rotating member in an automatic transmission case according to claim 1, characterized in that it is provided on the inner periphery of the fulcrum that is the contact surface between the tapered ring and the ring groove. Annular plate-shaped member. 3) An annular ring fixed to a fixed member or a rotating member in an automatic transmission case according to claim 2, wherein the distance between the load point and the fulcrum is 1 mm or less in the radial direction. Plate member. 4) The tapered ring is characterized in that both the outer circumferential end and the other end surface of the tapered ring have curved portions, and the inner circumferential end of the one end surface has a curved portion having a radius larger than the curved portion. An annular plate-shaped member fixed to a fixed member or a rotating member in an automatic transmission case according to claim 1.